WM8321 datasheet(193/253 Pages) WOLFSON

193 / 253 page

Production Data

WM8321

PD, February 2012, Rev 4.0

193

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

12:11

DC2_HWC_SR

C [1:0]

DC-DC2 Hardware Control Source

00 = Disabled

01 = Hardware Control 1

10 = Hardware Control 2

11 = Hardware Control 1 or 2

DC2_HWC_VS

DC-DC2 Hardware Control Voltage select

0 = Set by DC2_ON_VSEL

1 = Set by DC2_SLP_VSEL

9:8

DC2_HWC_M

ODE [1:0]

DC-DC2 Hardware Control Operating Mode

00 = Forced Continuous Conduction Mode

01 = Disabled

10 = LDO Mode

11 = Hysteretic Mode

6:4

DC2_HC_THR

[2:0]

000

DC-DC2 High Current threshold

000 = 125mA

001 = 250mA

010 = 375mA

011 = 500mA

100 = 625mA

101 = 750mA

110 = 875mA

111 = 1000mA

DC2_HC_IND_

ENA

DC-DC2 High Current detect enable

0 = Disabled

1 = Enabled

DC2 Control 2

ADDRESS

BIT

LABEL

DEFAULT

DESCRIPTION

REFER TO

R16477

(405Dh)

DC2 ON

Config

15:13

DC2_ON_SLO

T [2:0]

000

DC-DC2 ON Slot select

000 = Do not enable

001 = Enable in Timeslot 1

010 = Enable in Timeslot 2

011 = Enable in Timeslot 3

100 = Enable in Timeslot 4

101 = Enable in Timeslot 5

110 = Controlled by Hardware Enable 1

111 = Controlled by Hardware Enable 2

9:8

DC2_ON_MOD

E [1:0]

DC-DC2 ON Operating Mode

00 = Forced Continuous Conduction Mode

01 = Auto Mode (Continuous / Discontinuous

Conduction with Pulse-Skipping)

10 = LDO Mode

11 = Hysteretic Mode

6:2

DC2_ON_VSE

L [6:2]

0_0000

DC-DC2 ON Voltage select

DC2_ON_VSEL [6:0] selects the DC-DC2 output

voltage from 0.6V to 1.8V in 12.5mV steps.

DC2_ON_VSEL [6:2] also exist in ICE/OTP memory,

controlling the voltage in 50mV steps.

DC2_ON_VSEL [6:0] is coded as follows:

00h to 08h = 0.6V

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